cut down

削减，降低

custard, custard pie, custodial, custodian, custody, custom, Custom House, custom-built (also custom-made), customarily, customary, customer, customize, customize, -ise, customs, customs house, customs union, cut, cut across, cut at sb/sth, cut back, cut down on, cut glass, cut in, cut in (on sb/sth), cut into, cut off, cut out, cut out for, cut sb off, cut sb up, cut sb `down, cut sb. off, cut sb/sth from sth, cut short, cut sth away (from sth), cut sth back, cut sth open, cut sth through, cut through, cut up,